Unit check option (#5175)

* Add option to control parameter units

* Check setting before validation

* Update part parameter settings page

* Update unit tests

* Update docs

InvenTree/common/models.py

@@ -1249,6 +1249,13 @@ class InvenTreeSetting(BaseInvenTreeSetting):
             'default': '',
         },
 
+        'PART_PARAMETER_ENFORCE_UNITS': {
+            'name': _('Enforce Parameter Units'),
+            'description': _('If units are provided, parameter values must match the specified units'),
+            'default': True,
+            'validator': bool,
+        },
+
         'PRICING_DECIMAL_PLACES_MIN': {
             'name': _('Minimum Pricing Decimal Places'),
             'description': _('Minimum number of decimal places to display when rendering pricing data'),

InvenTree/part/models.py

@@ -3532,6 +3532,16 @@ class PartParameter(MetadataMixin, models.Model):
 
         super().clean()
 
+        # Validate the parameter data against the template units
+        if InvenTreeSetting.get_setting('PART_PARAMETER_ENFORCE_UNITS', True, cache=False, create=False):
+            if self.template.units:
+                try:
+                    InvenTree.conversion.convert_physical_value(self.data, self.template.units)
+                except ValidationError as e:
+                    raise ValidationError({
+                        'data': e.message
+                    })
+
         # Validate the parameter data against the template choices
         if choices := self.template.get_choices():
             if self.data not in choices:

InvenTree/part/test_param.py

@@ -4,6 +4,7 @@ import django.core.exceptions as django_exceptions
 from django.test import TestCase, TransactionTestCase
 from django.urls import reverse
 
+from common.models import InvenTreeSetting
 from InvenTree.unit_test import InvenTreeAPITestCase
 
 from .models import (Part, PartCategory, PartCategoryParameterTemplate,
@@ -168,11 +169,24 @@ class ParameterTests(TestCase):
             param = PartParameter(part=prt, template=template, data=value)
             param.full_clean()
 
+        bad_values = ['3 Amps', '-3 zogs', '3.14F']
+
+        # Disable enforcing of part parameter units
+        InvenTreeSetting.set_setting('PART_PARAMETER_ENFORCE_UNITS', False, change_user=None)
+
         # Invalid units also pass, but will be converted to the template units
-        for value in ['3 Amps', '-3 zogs', '3.14F']:
+        for value in bad_values:
             param = PartParameter(part=prt, template=template, data=value)
             param.full_clean()
 
+        # Enable enforcing of part parameter units
+        InvenTreeSetting.set_setting('PART_PARAMETER_ENFORCE_UNITS', True, change_user=None)
+
+        for value in bad_values:
+            param = PartParameter(part=prt, template=template, data=value)
+            with self.assertRaises(django_exceptions.ValidationError):
+                param.full_clean()
+
     def test_param_unit_conversion(self):
         """Test that parameters are correctly converted to template units"""
 

InvenTree/templates/InvenTree/settings/part_parameters.html

@@ -4,16 +4,30 @@
 {% block label %}part-parameters{% endblock label %}
 
 {% block heading %}
-{% trans "Part Parameter Templates" %}
+{% trans "Part Parameters" %}
 {% endblock heading %}
 
-{% block actions %}
+{% block panel_content %}
+
+<table class='table table-striped table-condensed'>
+    <tbody>
+        {% include "InvenTree/settings/setting.html" with key="PART_PARAMETER_ENFORCE_UNITS" icon="fa-clipboard-check" %}
+    </tbody>
+</table>
+
+<div class='panel-heading'>
+    <div class='d-flex flex-wrap'>
+        <h4>{% trans "Part Parameter Templates" %}</h4>
+        {% include "spacer.html" %}
+        <div class='btn-group' role='group'>
             <button class='btn btn-success' id='new-param'>
                 <span class='fas fa-plus-circle'></span> {% trans "New Parameter" %}
             </button>
-{% endblock actions %}
+        </div>
+    </div>
+</div>
 
-{% block content %}
+<div class='panel-content'>
     <div id='param-buttons'>
         <div class='btn-group' role='group'>
             {% include "filter_list.html" with id="parameter-templates" %}
@@ -21,5 +35,6 @@
     </div>
     <table class='table table-striped table-condensed' id='param-table' data-toolbar='#param-buttons'>
     </table>
+</div>
 
-{% endblock content %}
+{% endblock panel_content %}

docs/docs/part/parameter.md

@@ -92,6 +92,12 @@ If a part parameter is created with a value which is incompatible with the units
 {% include 'img.html' %}
 {% endwith %}
 
+This behaviour can be disabled if required, so that any parameter value is accepted:
+
+{% with id="enforce_units", url="part/part_parameters_enforce.png", description="Enforce part parameters" %}
+{% include 'img.html' %}
+{% endwith %}
+
 ### Parameter Sorting
 
 Parameter sorting takes unit conversion into account, meaning that values provided in different (but compatible) units are sorted correctly: